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Areas of Responsibility

The Spokane County Traffic Department is responsible for traffic engineering and traffic operations for Spokane County. The Department maintains traffic control devices for all Spokane County roads. Below is a list of services we provide along with a description and performance measures (if applicable).

Collision data analysis, review of roadway safety, roadside safety/guardrail inventory and analysis. The Spokane County Traffic Safety Commission is also a part of Spokane County Traffic Department; please see our web site at www.SCTSC.org

Submitted traffic control plans by contractors working in Spokane county right-of-way are reviewed; in a typical year 150 traffic control plans are reviewed. Here is the link to the Spokane County Traffic Control Plan submittal process Traffic Control Plan Process

100 signals are maintained by Spokane County, this includes the signal maintenance and operation of Spokane County signals and maintenance of local municipalities signals that include; City of Spokane Valley, Millwood and Liberty Lake. Please see this link Spokane County Signals for a list of traffic signals maintained by Spokane County. To report problems with a signal please see this link: Report a Signal

Traffic Signs - Installation and Maintenance

Maintain existing signs and evaluate the necessity of installing new signs. 42,000 signs are maintained by Spokane County, which include 14,000 signs maintained for the City of Spokane Valley. To report problems with a sign, please see this link: Report a Sign

Traffic Counting

Vehicles on all arterial roads are counted each year to maintain a database of daily traffic data, approximately 900 traffic counting devices are placed each year, this includes many speed studies and vehicle classification (truck percentage). For the Spokane County Traffic Count page select this link: Traffic Count Atlas